Introducing Mopsechiniscus franciscae, a new species of tardigrade — one of the hardiest creatures known to science. It's the first time this genus has been discovered as far south as Antarctica, a find that hints at this remarkable animal's ancient roots. »6/17/14 1:40pm 6/17/14 1:40pm

Looking back on all of humanity's successes in space, it can be easy to forget that many of our accomplishments have been built on the sacrifices of other creatures. Here are ten animals who played an indispensable role in paving the inter-planetary way to space. »12/12/11 10:48am 12/12/11 10:48am

Extremophiles challenge everything we thought we knew about the existence of life on Earth. Now, astrobiologists are questioning if some extremophiles are actually aliens living among us. Just who are these incredible creatures, and what can we learn from them? »7/18/09 2:00pm 7/18/09 2:00pm